A typical rotary screw surroundings compressor has two interlocking helical rotors within a housing. Air comes in through a valve, typically called the inlet valve and can be taken into the space between your rotors. As the screws switch, they reduce the volume of the air, therefore increasing the pressure.
The center of an air compressor is the screw element which can be called air-end. The Screw Air Compressor china air-end is certainly the most important component of any screw-type compressor. It’s that portion of 
the machine where the actual compression occurs. It is the heart of the rotary screw surroundings compressor.
A Rotary Screw Air Compressor is a compressor that uses a rotary-type positive displacement system, called a rotary screw, air-end. … Rotary Screw Compressors also use two inter-twined helical formed screws, known as rotors, to compress the air flow.